3758021 has 2 divisors, whose sum is σ = 3758022. Its totient is φ = 3758020.

The previous prime is 3758017. The next prime is 3758033. The reversal of 3758021 is 1208573.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3496900 + 261121 = 1870^2 + 511^2 .

It is an emirp because it is prime and its reverse (1208573) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3758021 - 2² = 3758017 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3758221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1879010 + 1879011.

It is an arithmetic number, because the mean of its divisors is an integer number (1879011).

Almost surely, 2^3758021 is an apocalyptic number.

It is an amenable number.

3758021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3758021 is an equidigital number, since it uses as much as digits as its factorization.

3758021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 3758021 is about 1938.5615801413. The cubic root of 3758021 is about 155.4723158017.

The spelling of 3758021 in words is "three million, seven hundred fifty-eight thousand, twenty-one".